{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "DNA", "protein", "cell type", "RNA"], "input": "This absence of binding was localized to the NF-kappa B region of the HIV-1 enhancer ; the 65-kDa plus 50-kDa NF-kappa B heterodimer was preferentially lost."}
{"cell line": [], "DNA": ["NF-kappa B region", "HIV-1 enhancer"], "protein": ["NF-kappa B", "65-kDa plus 50-kDa NF-kappa B heterodimer"], "cell type": [], "RNA": []}